Genetics of robustness under nitrogen‐ and water‐deficient conditions in field‐grown lettuce
نویسندگان
چکیده
Abstract Robustness is the measure of ability to perform well across multiple environments. The genetics robustness in lettuce ( Lactuca sativa L.) under changing nitrogen (N) application was studied by two parameters obtained from linear regression analysis. water assessed parameters: relative efficiency component (REC) and susceptibility (SC). efficiency, sensitivity, effect reduced irrigation on these for 50 lines 2011. Efficiency, plant N uptake utilization were important traits application. Eight cultivars re‐evaluated 2012, 2014, 2016 high‐ low‐N treatments order estimate repeatability sensitivity. Repeatability greater than In addition, REC, SC, nutrient concentration, content, dry‐to‐fresh biomass percentage, bolting, shoot production quantitative trait locus (QTL) analysis a recombinant inbred line (RIL) population derived Grand Rapids Iceberg. phenotyped three experiments genotyped sequencing. Major clusters QTL identified linkage groups (LGs) 3, 7, 9. Minor‐effect sensitivity LGs 3 4. Intermediate‐effect SC 4 7. These results provide evidence that components (efficiency sensitivity) (REC SC) availability are genetically independent can be improved through breeding.
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ژورنال
عنوان ژورنال: Crop Science
سال: 2021
ISSN: ['1435-0653', '0011-183X']
DOI: https://doi.org/10.1002/csc2.20380